Forum Discussion
Old-Biscuit
Mar 19, 2016Explorer III
A/C Unit can NOT pull any vapors thru water in 'P' traps....not going to happen
A/C Unit return air CAN pull odors from grey waste tank via the Air Admittance Valves under sinks on drain line downstream of 'P' trap.
OEM AAVs are just a thin flexible diaphragm held in-place by a 'tang' on diaphragm
Tang stretches...diaphragm doesn't seal off..stink from grey tank comes into RV.
Cheap ones available for $5 at Big Box Stores.....better ones/higher pricing also available
A/C Unit return air CAN pull odors from grey waste tank via the Air Admittance Valves under sinks on drain line downstream of 'P' trap.
OEM AAVs are just a thin flexible diaphragm held in-place by a 'tang' on diaphragm
Tang stretches...diaphragm doesn't seal off..stink from grey tank comes into RV.
Cheap ones available for $5 at Big Box Stores.....better ones/higher pricing also available
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